Widow is onto something here. I did some calculations and came up with similar (Though not the same) results. This also assumes that these panels capture 80W 24 hours a day, which of course will not occur. Here's my quick notes on the subject:
Quote (Notepad notes to prove or disprove widow)
http://en.wikipedia.org/wiki/List_of_countries_by_electric_energy_consumption
(total MW/y) * (watts per hour) / (watts in a panel) = total # of panels required
(3,741,485,000 * 114.077116) / 80
http://www.google.com/search?q=80W+solar+panel&tbs=shop1&aq=fcost: $500 apiece (total cost = 2.66761136 Trillion dollars)
size: 47in.L x 21in.W
1 mile = 63,360 inches
Total size of all panels required: (MWy * Wh / 80w panel * inches / inches in a mile) = mile size
(3,741,485,000 * 114.077116) / 80 * 47 / 63,360 = 3,957,630 miles length
(3,741,485,000 * 114.077116) / 80 * 21 / 63,360 = 1,768,302.99 miles width
http://en.wikipedia.org/wiki/United_StatesSize of USA: 3.79 million square miles
Am I missing something obvious here? Solar power is not a solution, otherwise businesses would be jumping at that in a heartbeat (not to mention consumers).
Oh, and lol at the cost. That is also only for the panels, and doesn't include all connective material, installation, land (including any demoing required), and maintenance. Oh, and then triple the cost (at least), for government bloat expenditures, if you want the government to do it.